Nintendo shouldn't be doing things just because the fans say they want it. Most of Nintendo's greatest successes have come when they did their own thing, doing something unprecedented that no one had thought of. Look at things like Metroid Prime or Zelda: Wind Waker, where fans hated the idea initially, but they ended up being beloved classics. Of course, that doesn't mean you need to go against the grain all the time, but you need more reason than people saying they want it before you do it.